//
// Created by Administrator on 2025/5/1/周四.
//

#include "iostream"

using namespace std;

class Java {
public:
    void header() {
        cout << "首页、公开课、登录、注册...（公共头部）" << endl;
    }

    void footer() {
        cout << "帮助中心、交流合作、站内地图...(公共底部)" << endl;
    }

    void left() {
        cout << "Java,Python,C++...(公共分类列表)" << endl;
    }

    void content() {
        cout << "JAVA学科视频" << endl;
    }
};

class Python {
public:
    void 
};

int main() {

}